Injector mounting



Patented Dec. 15, 1942 INJECTOR MOUNTING Harry A. Hoke, Altoona, Pa.,assignor to The Pennsylvania, Railroad Company, Philadephia, Pa., acorporation of Pennsylvania Application Mar-ch27, 1942, Serial No.436,428

8 Claims.

This invention relates to the application of feed-water injectors toboilers, tanks, and so forth; while it has reference, more particularly,to the mounting of such devices on locomotives. The application ofnon-lifting injectors to locomotives and the delivery of water therebyto the boiler of the newer type locomotives has presented manydifficulties, the main disadvantage being incidental to the limitedspace and increased lateral movement afforded the rear end of thelocomotive relative to the tender. It is also essential that theinjector maintain a fixed relation with respect to the back end of thelocomotive boiler, and such relation must not vary with the heatxpansion of said boiler, as any deviation from such location of theinjector results, within a short time, in failure of or trouble with thesteam and water pipes. Still further, incidental to the more modernlocation of the locomotiv trailer truck frame and the steam exhaustpipes to the booster, the injector can not be supported by a bracketattached directly to the boiler mud-ring.

The fundamental object of the present invention is to overcome the noteddisadvantages, in a simple and effective manner, by a novel means ofsupporting the injector so that the fore and aft movement of the boilerrelative to the locomotive main frame, incidental to expansion andcontraction is reciprocally neutralized so far as the injector isconcerned, without any lateral motion or strain being imparted to theassociated steam and water pipes, whereby failure of or trouble withsaid pipes is compensatively safeguarded.

With the stated object, and incidental advantages in view, thisinvention essentially consists in the novel features of construction andcombinations of parts as set forth more particularly in the concludingclaims, while a preferred embodiment of said invention is hereinafterexplained with reference to the drawings which accompany and form a partof this specification, and wherein like characters of referencedesignate corresponding parts in all the views.

In the drawings:

Fig. 1 is a broken side elevation of the left-hand rear end portion of alocomotiv preferably having a non-lifting injector applied thereto inaccordance with this invention, parts being shown in section for betterillustration of important details.

Fig. 2 is an end view of the same, or looking from the right of thepreceding figure towards the left-hand thereof.

Fig. 3 is a top plan view; and,

Fig. 4 is a detail section on the plane designated IV-IV in Fig. 1.

In describing the embodiment of the invention, exemplified by the abovecaptioned figures, specific terms will be employed for the sake ofclarity, but it is to be understood the scope of said invention is notthereby limited; each such term being intended to embrace allequivalents which perform the same function for an analogous purpose.

As illustrated in the.drawings, the rear end of a locomotive cab iscomprehensively designated by the numeral 5; 6 indicates a fragmentaryportion of the tender; 1 a part of the conventional stoker connection; 8the trailer-truck frame; 9 the associated wheels; I0 the boiler rearslidablepad; and I I the locomotive frame cross-tie: all of said partsbeing referred to merely by Way of providing appropriate background inexplaining the present inventive subject-matter.

In the mor recent type of heavy-duty locomotive, and in accordance withthis invention, the feed-water injector I2 is mounted with assurancethat it will not move longitudinally in respect to the locomotiveboiler, by aid of a slidable bracket I3, preferably of angularformation. This bracket I3 is, conveniently, composed oflappingly-related components I4, I5, the former I4 of which serves as areinforce for the latter I5, while said components are rigidly securedtogether, against relative shifting, and are provided with an oil holeI5 for lubricatin purposes, Fig. 4. The component I5 embodies a verticalleg I6, for rigid attachment thereto of the non-lifting injector I2, ahorizontal portion I'I overlying the adjoining part of the component I4,and an obliquely-related or upwardly-inclined extension I8 having thefree end bifurcated and provided with loops or eye-sections I9, forhinge-like connection or articulation by an appropriate element 20 to anapertured projection 2| from the boiler aligned'rear pad III which isslidable longitudinally with said boiler, in accordance with knownpractice. This connection of the parts I9, 2|, it is to be noted, alwaysensures the injector I2 being maintained in the desired locationrelative to the locomotive boiler back-end, without any possibility ofvariation or change from such location, for a reason hereinafter againreferred to.

The bracket I3 is slidably mounted to accommodate the fore-and-aftmotion due to boiler expansion and contraction, relative to thelocomotive frame, by means of an inverted channellike clamp-device 22,having an associated bearer element 23, and it is held in place bysecuring means 24 on the top of the locomotive frame cross-tie ll; whilethe parts 22, 23 may be permanently rigidified by welds 25, in anobvious manner.

From the foregoing it will be apparent that by forming the clamp-device22, as shown, and by affording the angle-bracket l3 slidable guidance,intermediate the bearer element 23 and the channel 26 of said device,the angle-bracket I3 is restrained from side or lateral motion, whilesaid bracket being anchored against longitudinal shifting by the element20 to the boiler pad ID, the injector I2 always maintains its fixedlocation relative to the back-end of the boiler 21, under thermalexpansion andcontraction of the latter. In other words, the mountingbracket l3 in no way affects the proper location of the injector [2;while it accommodates the fore-andaft motion induced by thermalexpansion and contraction of the boiler 21, whereby a simple andeffective means is provided which positively prevents failure or causesdisruption of the locomotive steam supply pipe 28, or the water hose 29,as Well as the associated water supply connections.

Having thus described my invention, I claim:

1. In a steam generator, a rigid support, bearer-means for the generatormovable relative to said support, an injector for supplying feed-waterto the generator, a mounting for the injector 2. In a steam generator, arigid support, bearer-means for the generator movable relative to saidsupport, an injector for supplying feed-Water to the generator,,amounting for the injector slidable relative to the rigid support, saidmounting serving to maintain the injector in fixed location relative tothe generator, and means articulating the mounting to the bearer-meansfor concurrent movement with the latter incidental to thermal expansionand contraction of the generator. 1

3. In a steam locomotive, a frame including a cross-tie, a boiler withsupporting pads cooperative with said frame and shiftable longitudinallyof the latter, an injector for supplying feed-water to the boiler, amounting for the in jector slidable relative to the cross-tie, saidmounting serving to 'maintain the injector in fixed location relative tothe rear end of the boiler, and means articulating the forward portionof the mounting to the proximate boiler'supporting pad, whereby saidmounting is movable longitudinally in respect to the frame concurrentwith thermal expansion and contraction of the boiler.

4. An injector support forv steam generators comprising anangle-bracket, one leg whereof affords attachment for the injector andthe other leg provides the support, means for shiftably guiding thesupporting leg relative to a stationary base, and means at the free endof the supporting leg for articulation to a thermal-influenced bearerpart of the generator.

5. A mounting for the injector and connected water-feed and steam-supplypipes of locomotive 'boilers comprising an angle-bracket, one legwhereof affords atachment for the injector and the other leg forms thesupporting portion of the bracket, means affording slidable guidance forthe bracket supporting portion relative to a cross-tie of locomotiveframe, and means at the free end of said supporting portion articulatingthe latter to the boiler rear end whereby thermal expansion andcontraction of said boiler can not produce imperfection in or fractureof the connected water-feed and steam supply pipes.

6. A mounting for the non-lifting injector of steam locomotivesincluding a boiler with bearer pads' shiftable longitudinally of thelocomotive frame under thermal influence, said mounting being securableto the locomotive frame and consisting of an angle-bracket having oneleg vertically-disposed and affording attachment for the injector,'andthe other leg being horizontal and providing support therefor; guidemeans for the bracket supporting leg and restricting its movement to thelongitudinal in respect to the locomotive frame; and fulcrum means atthe free end of the bracket supporting leg for articulation to therearmost bearer pad of the boiler, whereby expansion and contraction ofsaid boiler does not affect the location of the injector relative to theboiler rear end.

7. A mounting for non-lifting injectors, in accordance with claim 6,wherein the angle-bracket comprises inner and outer lappingly-relatedand rigidly united components, the inner component serving as areinforce for the outer component; said outer component embodying avertical leg, a horizontal portion overlying the confronting part of thereinforce; and said horizontal portion having an inclined extension withits free end looped for hinge-connection to an apertured projection onthe rearmost bearer pad of the locomotive boiler.

8. A mounting for non-lifting injectors, in accordance with claim 6,wherein the guide means for the angle-bracket supporting leg is in theform of a clamp device, said device comprising an inverted channelcomponent efiective to restrain the bracket against lateral movementwhile permitting it to shift in a longitudinal direction with respect tothe locomotive frame; an associated bearer element; and means Wherebythe device is rigidly securable to the locomotive frame rear end.

' HARRY A. HOKE.

